To resolve the Error 500 issue when trying to open DPMS in Windows 11 using Microsoft Edge, try the following solution:
Stop Redirection to Edge
- Press the Windows key + R to open the Run dialog box.
- Type
inetcpl.cpl
and press Enter. - In the Internet Properties window, go to the Advanced tab.
- Under the Browsing section, uncheck the box for “Enable third-party browser extensions.”
- Click Apply and then OK.
This should help resolve the issue. Note that Internet Explorer is not supported in Windows 11, and Microsoft Edge is the default browser.